Ddf
[计] 数据库描述文件, 开发论证设施
🗣️ 情景例句
your reasons for wanting an animal.
你要养动物的原因。
You'd better give us a rough idea of your price.
您最好给我们一个粗略的价格。
Mum, I don't feel very well.
妈妈，我感到不舒服。